J/AJ/131/1948 Narrow line Seyfert 1 galaxies in the FBQS (Whalen+, 2006)
Optical properties of radio-selected narrow-line Seyfert 1 galaxies.
Whalen D.J., Laurent-Muehleisen S.A., Moran E.C., Becker R.H.
<Astron. J., 131, 1948-1960 (2006)>
=2006AJ....131.1948W 2006AJ....131.1948W
ADC_Keywords: Galaxies, Seyfert ; QSOs ; Spectroscopy
Keywords: galaxies: Seyfert - quasars: emission lines
Abstract:
We present results from the analysis of the optical spectra of 47
radio-selected narrow-line Seyfert 1 (NLS1) galaxies. These objects
are a subset of the First Bright Quasar Survey (Cat. J/AJ/112/407)
and were initially detected at 20cm (flux density limit 1Jy) in the
VLA FIRST Survey.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 63 62 Narrow-line Seyfert 1 data
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See also:
J/AJ/112/407 : The FIRST bright QSO survey (Gregg+, 1996)
J/ApJS/126/133 : The FIRST bright quasar survey. II. (White+, 2000)
J/ApJS/135/227 : The FIRST bright quasar survey. III. (Becker+, 2001)
VIII/71 : The FIRST Survey Catalog, Version 03Apr11 (Becker+ 2003)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- FBQS Source identification (HHMM+DDMM)
(FBQS JHHMM+DDMM in Simbad) (1)
11- 15 F5.3 --- z Redshift
17- 21 F5.2 [-] logR* The k-corrected radio loudness parameter
23- 26 I4 km/s FWHM(Hb) Full-width at half-maximum of Hβ line
28- 31 I4 km/s FWHM([OIII]) ? Full-width at half-maximum of
[OIII](5007Å) line
33- 37 F5.3 --- [OIII]/Hb ? The [OIII]/Hβ ratio
39- 43 F5.1 0.1nm EW(FeII) ? Equivalent width of FeII (2)
45- 50 F6.2 0.1nm EW(Hb) Equivalent width of Hβ
52- 57 F6.2 0.1nm EW([OIII]) ? Equivalent width of [OIII]
59- 63 F5.2 --- alpha Spectral index (3)
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Note (1): Sources 1421+2824, 1644+2619, and 2155-0922 had [OIII] emission lines
destroyed by atmospheric lines.
Note (2): Calculated from the 4434-4684 and 5147-5350 Angstroms lines.
Note (3): Where Sλ ∝ λ-α.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 01-Mar-2007